Downdraft device for a cooking appliance



FIG. 1 is a perspective view of a downdraft device for a cooking appliance showing our ornamental design;

FIG. 2 is a front view therof;

FIG. 3 is a top view therof;

FIG. 4 is a left view thereof; and,

FIG. 5 is a right view thereof. 

The ornamental design for a downdraft device for a cooking appliance, as shown and described. 